DHAKA, Bangladesh  Army experts recovered a time bomb Sunday from a mosque in Dhaka, three days after a mosque bombing killed six people in Bangladesh's southwest, a military commander said.

The bomb was found lying in a mosque inside the headquarters complex of the Jamaat-e-Ahmadiyya in the Bangladeshi capital, said army Maj. Ahsan.

Ahmadiyya Muslims, a minority sect, first saw the bomb when they went to the mosque to offer early-morning prayers. They informed police, who called in the army.

The sect was founded in late 1880s by Mirza Ghulam Ahmad, who claimed to be Islam's last prophet. The majority Sunni Muslims usually target the Ahmadiyyas for not recognizing Mohammad, the founder of Islam, as the last prophet.

Last month, a group called Khatme Nabuyat, or the Last Prophet, held a rally in Dhaka asking the government to declare Ahmadiyyas non-Muslims.

Authorities said Sunday that three people were detained for questioning in Friday's bomb blast, which killed six people at an Ahmadiyya mosque in the southwestern city of Khulna.

On Saturday, military experts diffused a time bomb found in a candy box during Friday prayers in an Ahmadiyya mosque in Dhaka's northern Mirpur district.

The experts also defused an antitank land mine found in a leather box on Friday at the reception desk of Dhaka's Janakantha newspaper office.